Antiskid device for tires.



Y P. T. HAM

ANTISKID DEVICE I RES.

APPLICATION FILED FEB.2 1 1 9 1 0.

Wsses Inventor @n/1. Z'Vulzp Hamn. MWL-Li: @fz l y P. T. HAMM. 'ANTISKID DEVICE FOR TIRES. APPLIOATION FILED FEB. 21, 1910.

Patented Dec. 20, 1910.l

2 SHEETS-SHEET 2.

Iuveizzo' Ima/7! am Witnesses www as -UNITED sTATns PATENT oFrIoE.

rH'ILIr THAMM, or NEW Yoan, N. Y., AssIGNon To. ATLAS CHAIN coMrANY, 0F

` NEW YQRK, N. Y., AcoRroRATIoN oF NEW YORK.

ANTISKID DEVICE FOR TIRES.

" Tolall whom 'it may concern: y'

Be it known that I, PHILIP T. HAMM, aA

citizen ofthe United States, and a resident of New York city, in the county of Kings and State of NewYork, have invented cer.- tain new and useful Improvements in Antiskid Devices for Tires, of which the following is a 'specication This invention relates to anti-skid devices for tires commonly known astire chainsan'd used on, tiresof motor vehicles toprevent' the slipping and skiddiiig of the tires on the road. A

The object ofmy invention is'to furnish an improved cross member for the tread,

consisting of links that can be simply and inexpensively made from sheet metal. blanks, the links being iexibly connected/by means integral with such links and being so formed that the tread surface thereof will have an efiicient hold uponthe road and so constructed that they are reinforced in an improved manner against crushing.

In the drawings accompanying this specitieation my invention is illustrated lin its preferred l embodiment wherein- Figure l is a section of a portion of a tire showing the chain in position thereonand under compression from the weight of the together, parts being broken away forr clearer illustration. Fig. T is a plan view of a single link.

ilineG--G of Fig. 7. Fig. l() illustrates a modicatioii of jointure arrangement.

In Figs. l and 2 my improved chain as illustrated includes'side members l and 2, which maybe of ordinary Chain, construction.

Specication of Letters Patent.

:Application'led February 21, 1910. Serial No. 545,025.

tions 6 and 7 respectively,

Fig. S is a sectionoii line cz- 0, ofFigT and Fig-9 is a section on Patentedjn'ec". 2.0, 191e.

in the present embodiment." Each of these links is formed from a blank as shown in Fig. 3, comprisingtwo flat portions-3 and 4 connected by a narrower portion 5. -At the outer 4ends of portions 3 and-4 are eye portransverse eyes of the lsame size and s a e. The blank isl perforated byholes 8 andp 9 and recesses 1,0 andll reach inwardly from eyes 6 and 7, respectively. -Slits 12 andl3 connect holes Sand 9 withreoesses 10 andv 65 11, respectivelyI and are" provided 'to'allow the bending upward of lugs 14,"15"f16and"`f- 17 (Fig. 4) `t extent so that in the laterbending said` eye portions will be 'brought together face to face, as shownin Figs.v 6 and 9;f Before-V folding the blank vupon itself to bringeye"1 portions 6, 7 together, edges of portions 3,14 i5 are bent upwardly to forinsupports. 23, 24 and 25. The partly bent blank :is now folded at its narrower portiong and poi-` tions 23 and 24 and portions 22and 251ei spectively brought togetherv edge -to' edges() thus-bringing flat portions 34 and` intot-- parallelism, Ibut offset orfspaeed apart from each other.

After one link has beenjentirely formed' as shown in the lower right hand portion of' 85 Fig. 6, a second link,` .as shown in-Fig."5

or partially bent at l5, is assed throughl longitudinal slot 18 to its midportion l5 and shifted to'eye portion of said first link and"Y said second link is closed, whereby said links are articulated as shown in said FigaA 6.v This is accomplished by inserting one end of `a partially bent' link transversely of its. normal position into the slot '18 of a prel viously bent link, this slot, together with the eye-portions 6 and 7, being longer than the width of the eye-portionslof the bent- Jlink, until the narrower' or neck portion 5 ofthe inserted link is iii position to be turned around `within the eye-portions 6 100 and .7, lwhereupon the inserted' link can be bent at its narrow portion to. tliusarticulate lthe 'two links together, in a manner which l 'will be readily understood. YOf course, if

having velongated "60' us providing slots-18, 19 i'nj" said link.` The eye' portionsiare alsobe'nt upwardly as at l2() and 21, Fig.- 5 'to some 70 Cross members C liewbetwecn vsaidyside meniup of a lplurality of links, five being shown one 'only of the parallel portions oftlie- 105 link is'provided with an yeye and aslot the.' links could be articulated togetherin precisely the same manner before thetparallel beitsfaiitlzare :connected vthereto vby suitable links as 20.. Each cross. member Q -is iiiade arising two offset arallel iortions conf site end of the members from the said bent I ting admission 'of the adjacent link member Abent poitioii through which passes the bent portions of the two links are brought into j parallelism. y Y

Fig. 1Q illustrates a modified arrangement of the eye portion of my improved link wherein eye portions (5x and 7X do not meet 'along the medial plane ot the link, but between said medial plane and the lower face, of the link.' Narrow portion 5X of the eoniiecting link is so bent as to present its connecting portion with the adjacent link in the-offset plane o'f members *.GX, 7X. The oi setting of these connecting portions serves as a protection against abrasion iu use.

There is thus provided a light, strong and simple link of integral construction and which can be easily articulated with other links.

I claim: l. In an anti-skid device for tires', a lilik formed from an integral blank, and coninect'ed by a bent narrower poi'tion, the parallel portions having their side edges bent into engagement to support such parallel portions oifset, and eye portions at the oppoportion through which passes the bent portion of the adjacent link, said parallel portioiis'each having a longitudinal slot extending :trom the said eye portion permitA whereby to articulate the links.

2. In an anti-skid device for tires, a link formed from an integral blank, and comprising two offset parallel portions connected by a bent narrower portion, the parallel portions having their side edges bent into engagement to support such parallel portions offset, and eye portions at the opposite end of the members from the said portion ofthe adjacent link, said parallel portions each having a longitudinal slot extending` from the said eye portion permitting admission of the adjacent' link meinber wherebyY to articulate the links, said parallel faces having portions bent inwardly into engagement at the margins of said slots.

3. In, an anti-skid device for tires, a link formed from an integral blank, and comprising two otiset parallel portions connected by a bent narrower portion, the parallel portions having their side edges bent into engagement torsupport such portions offset', each parallel portion having an eye portion at the opposite end from the said bent portion through which passes the b ent portion of the adjacent link, the eye portion being contiguous and o'tliset from the parallel portions, said parallel portions each hav inga longitudinal slot extending from the said eye portion permitting admission of the adjacent link member whereby to articulate the links, said parallel faces having pormargins of said slots. Y,

"i 4. In an anti-skid device for tires, a link toi-med from an integral blank and comprising two osetjor spaced apart parallel portions having their side edges bent into en gagenient to support such parallel portions spaced apart, said link having an eye-portion through which passes the bent portion of an adjacent link, said link also having'a longitudinal slot opening in'to the eye-por tion to permit the admission of an adjacent link, thereby to articulate the links.

In an anti-skid device for tires, a link formed from an integral blank and coinprising two oiiset or spaced apart parallel portions having means for holding such parallel portions spaced apart, said link having an eye-portion and a longitudinal slot opening into and of less width than such eyeportion for the entrance of an adjacent link thereby to articulate the links.

(3. .ln an anti-skid device lor tires, a cross member comprising a plurality of links each formed from an integral blank'and haring spaced apart members, one comprising 'a relatively flat road engaging portion provided with a narrow bent articulating portion and an eye portion of less width than the maximum width of the link and with a longitudinal slot opening into and of less width than said eye portion for'the admission of a similar companion link, thereby to articulate the links, thelongitudinal slot and eye portion combined having greater length than the width oi the eye portion.

7. In an anti-skid device -for tires, a link t'ornied from an integra-1T blank comprising two offset parallel portions connected by a bent narrower portion, said link having an eye-portion at the opposite end of the link 105v from the bent portion thereof and having a longitudinal slotl opening into and of less width than said eye-portion to permit theadmission of an' adjacent link' thereby to articulate the links.

8. In aii anti-skid device for tires, a link formed from an integral blank and compris'- ing two olf-set parallel portions connected by a bent narrower portion, portions to support said parallel portions olf-set, and eye 115 portions at the opposite end of theinembers from the said bent portion through which passes the bent portion of theadjacent link, said parallel portions each having a longitudinal slot extending from the said eye por- 120 tions permitting admission of the adjacent link member whereby to articulate the links.

9. In an anti-skid device for tires, a link formed from an integral blank and comprising two olf-set portions connected by a bent 125 narrower portion, a portion to support said portions oli-set, and an eye at the end of the link opposite the said bent portion and tions bent inwardly into engagement at thes Park Row Building, New York, N. Y., before two subscribing Witnesses.

PHILIP T. HAMM.

through which eye passes the bent portion of the adjacent link, and also having a longitudinal slot extending from the. .said eye portion for permitting admission of the adjacent link whereby to articulate the links.

Signed this eighteenth day of February, nineteen hundred and ten .(1910) in the 

